It is alone that part of the external universe which we call material which acts on man through his senses that part of which we ordinarily feel our knowledge to be the surest; but in reality, strangely enough, as will soon appear, this is one of the aspects of the external world, of which we can know nothing.

Young people at universities study to achieve knowledge and not to learn a trade. We must all learn how to support ourselves, but we must also learn how to live. We need a lot of engineers in the modern world, but we do not want a world of modern engineers.

The Roots of Violence: Wealth without work, Pleasure without conscience, Knowledge without character, Commerce without morality, Science without humanity, Worship without sacrifice, Politics without principles.

Before eating, always take a little time to thank the food.
When we show our respect for other living things, they respond with respect for us.
If we wonder often, the gift of knowledge will come.
Take only what you need and leave the land as you found it.
All plants are our brothers and sisters. They talk to us and if we listen, we can hear them.